cpp/sstreams/examples/stringstream

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Description
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Using an <tt>istringstream</ii>.

Epilogue
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Engine
Choices
json list of string, bool pairs
e.g. [["good", true], ["bad", false]]

Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>
using namespace std;

int main() {
// CONSTRUCT from a string
stringstream storage("Sample text 2parse");

string word1, word2, word3;
int num;

// EXTRACT from the stringstream
storage >> word1 >> word2 >> num >> word3;

cout << "Word 1: " << word1 << endl;
cout << "Word 2: " << word2 << endl;
cout << "Number: " << num << endl;
cout << "Word 3: " << word3 << endl;

// has a fail() member function like other istreams
cout << "Fail? " << boolalpha << storage.fail() << endl;
storage >> num; // try to read more
cout << "Fail now? " << storage.fail() << endl;
}

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C++ test suite
json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]
to just run once with no input use [{}]

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{}
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C++ test suite
See manual

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Property	Value
Description html markup shown to student	Using an <tt>istringstream</ii>.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <iostream> #include <iomanip> #include <string> #include <sstream> using namespace std; int main() { // CONSTRUCT from a string stringstream storage("Sample text 2parse"); string word1, word2, word3; int num; // EXTRACT from the stringstream storage >> word1 >> word2 >> num >> word3; cout << "Word 1: " << word1 << endl; cout << "Word 2: " << word2 << endl; cout << "Number: " << num << endl; cout << "Word 3: " << word3 << endl; // has a fail() member function like other istreams cout << "Fail? " << boolalpha << storage.fail() << endl; storage >> num; // try to read more cout << "Fail now? " << storage.fail() << endl; }
Java test suite See manual
C++ test suite json list of stdin/args tests e.g. `[{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]` to just run once with no input use `[{}]`	[ {} ]
C++ test suite See manual
Forbidden substrings json list of strings e.g. `["for","while"]`	remove
Solution visibility	remove
Java imports json list of importables e.g. `["java.util.*"]`	remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. `["DataStructure"]`	remove
Is example? i.e., just a demo	remove
Add compiler flag(s) json list of flags e.g. `["-Wno-unused-variable"]`	remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. `["-Wno-write-strings"]`	remove

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